No, this snow truck is not jack-knifing, the trailer is supposed to do that. It's the TowPlow and it clears snow-bound lanes in a flash. Are you listening Seattle?

The TowPlow is a steerable trailer-mounted plow pulled behind a 350HP tandem axle snow truck. It can swing out to one side and is equipped with a 26-foot moldboard, which allows a single snow truck to clear up to two lanes at a time. The trailer is also outfitted with a spreader that distributes sand, road salt, or liquid de-icer in its wake. This allows the truck to clear a divided highway is two to three passes rather than four or five that conventional plows require. According the company, this reduces fuel consumption by nearly 30 percent, doubles the effectiveness of a single truck, and speeds road clearings to reduce traffic tie-ups after storms.

The TowPlow was first employed in Missouri in 2005 and has since been adopted by numerous other states as well as in Canada. The plow doesn't come cheap, however—each trailer costs a cool $100,000. [AASHTO - TowPlow - AutoBlog - Ohio DoT (pdf)]

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